<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="css/bootstrap.min.css">
</head>
<body style="padding: 50px;">
    <button class="btn btn-default">默认按钮</button>
    <button class="btn btn-primary">主要按钮</button>
    <button class="btn btn-success">成功按钮</button>
    <button class="btn btn-info">信息按钮</button>
    <button class="btn btn-warning">警告按钮</button>
    <button class="btn btn-danger">危险按钮</button>
    <button class="btn btn-link">连接按钮</button>
    <hr>
    <button class="btn btn-primary btn-lg">超大按钮</button>
    <button class="btn btn-primary">大按钮</button>
    <button class="btn btn-primary btn-sm">小按钮</button>
    <button class="btn btn-primary btn-xs">超小按钮</button>
    <hr>
    <button class="btn btn-default">默认按钮</button>
    <button class="btn btn-default active">激活按钮</button>
    <button class="btn btn-default" disabled>禁用按钮</button>
</body>
</html>